ZGRF1

5'-3' DNA helicase which is recruited to sites of DNA damage and promotes repair of replication-blocking DNA lesions through stimulation of homologous recombination (HR). Promotes HR by directly stimulating RAD51-mediated strand exchange activity. Not required to load RAD51 at sites of DNA damage but promotes recombinational repair after RAD51 recruitment. Also promotes HR by positively regulating EXO1-mediated DNA end resection of double-strand breaks. Required for recruitment of replication protein RPA2 to DNA damage sites. Promotes the initiation of the G2/M checkpoint but not its maintenance. Catalyzes Holliday junction branch migration and dissociation of D-loops and DNA flaps..

Function from UniProtKB (Q86YA3), read 2026-09-23. CC BY 4.0.